Billy Mullen debuted on October 2, 1920, playing for the St. Louis Browns at Sportsman's Park IV; he played his final game on June 5, 1928, playing for the St. Louis Browns at Sportsman's Park IV.
Billy Mullen played in 6 games at third base for the St. Louis Browns in 1928, starting in none of them. He made 4 putouts, had 9 assists, and committed 2 errors, equivalent to .333 errors per game (estimate based on total games played in). He had one double play.
Billy Alvord debuted on April 30, 1885 and played his final game on July 8, 1893.
Billy Beane debuted on September 13, 1984 and played his final game on October 1, 1989.
Billy Bowers debuted on April 24, 1949 and played his final game on June 9, 1949.
Billy Arnold debuted on April 26, 1872 and played his final game on May 2, 1872.
Billy Ashley debuted on September 1, 1992 and played his final game on July 30, 1998.
Billy Baldwin debuted on July 29, 1975 and played his final game on September 28, 1976.
Billy Barnie debuted on May 7, 1874 and played his final game on June 28, 1886.
Billy Brewer debuted on April 8, 1993 and played his final game on October 2, 1999.
Billy Buckner debuted on August 25, 2007 and played his final game on July 23, 2013.
Billy Burke debuted on April 30, 1910 and played his final game on September 26, 1911.
Billy Campbell debuted on April 17, 1905 and played his final game on August 23, 1909.